Seed-feeding device.



H. B. BOZARD.

SEED FEEDING DEVICE.

APPLICATION FILED P111347, 1913.

1 1 1 2,43 1. Patented 001;. 6, 1914.

2 SHBETSSHBET 1.

H. B. BOZARD. SEED FEEDING DEVICE. APPLIOATION nun mm, 1913. 1,1 12,431 Patented 0ct.6, 1914.

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UNITED STATES PATENT OFFICE.

HARRISON B. BOZARD, OF LA CROSSE, WISCONSIN, ASSIGNOR TO LA CROSSE PLOW (70., OF LA OROSSE, WISCONSIN, A CORPORATION OF WISCONSIN.

SEED-FEEDING DEVICE.

Specification of Letters iatent.

Patented Oct. 6, 1914.

Application filed February 17, 1913. Serial No. 748,820.

To all whom it may concern Be it known that I, HAnnIson B. BOZARD, a resident of La Grosse, in the county of La Crosse and State of Wisconsin, have invented certain new and useful Improvements in Seed-Feeding Devices, of which the following is a full, clear, and exact description.

The invention relates to devices for measuring and feeding seed in seeding-machines.

The invention designs to provide an improved seed-feeding device of thetype generally known as force-feed. A considerable number of these devices are used on each grain-drill or seeding machine and in manufacture, increased cost, resulting from machining or truing up cast parts as they come from the foundry is prohibitive. In other words, it is necessary that the cast parts must be used without being machined. In practice, it has been found that many cast parts cannot be used on account of variation in shape due to uneven shrinkage or warpage, and if cast parts are used in feeding devices which are irregular, the de vice will not feed and measure accurately.

One object of the invention is to provide an improved construction of feeding devices which comprises or is organized of parts which may be cast without substantial departure from regularity of form, so that the cast parts will be substantially uniform and will cooperate accurately when asembled.

Further objects of the invention will be apparent from devices as hereinafter set forth.

The invention consists in the several novel features hereinafter set forth and more particularly defined by claims at the' conclusion hereof.

In the drawings: Figure 1 is a side elevation of a feed device embodying the invention, the feed-shaft being shown in section. Fig. 2 is a section taken on line 22 of Fig. 1. Fig. 3 is a section taken on line 33 of Fig. 41. Fig. 4 is a section taken on line 1-4: of Fig. 3. Fig. 5 is a horizontal section taken on line 5-5 of Fig. 3. Fig.

6 is a detail section of the ring or rosette which rotates with the fluted wheel.

The feed-case a is formed of sections a, and a The cross-walls a and a are integrally formed with section a. and the latter forms one side of the case. Section 0. forms the opposite side of the case. The sections are secured together by bolts 6. The case is adapted to be secured to the bottom of a feed-box or receptacle and to receive seed therefrom, as is well understood in the art. A polygonal drive-shaft 0, which usually drives a number of alined feed-devices extends laterally through the .case. A fluted feed-wheel cl is mounted on the drive-shaft and is rotated thereby. A collar 6 rotates with the shaft and a cylindrical follower e is journaled on the ro tating collar 6 and carries a bearing-portion d for the inner end of the fluted wheel d. Cotter pins f, f extending through shaft 0,

hold the fluted wheel, the follower and collar e in assembled relation on the shaft. The follower is provided with the usual wing (Z which is adapted to be moved across and vary the Width of the discharge- .opening between the fluted wheel and the transverse bottom-wall of the case. This wing slides through a correspondingly shaped slot d in the side of section a and holds the follower against rotation. The fluted wheel is movable transversely with the follower and into and out of the case by longitudinal movement of the feed-shaft. A ring 9 has an opening 9 corresponding to the periphery of the fluted wheel and in which said wheel is adapted to slide,'and this ring rotates with said wheel. Casesection a? has a recess adapted to receive the ring, the periphery 10 of this recess forming a peripheral bearing for the ring. The metal of section a is raised or extends outwardly and forms a thin side-wall 15 which, as at 11, provides a bearing-surface 12'for the outer face of ring g. A groove 13 is formed in the outer edge of said bearing surface and holes 14.- are formed in the raised side-wall 15 of section a The formation of this raised wall, as distinguished from a wall reduced in thickness by a recess therein, attains an important result. By this formation, the sidesection a? of the case will, in casting, obviate irregular shrinkage and the castings will be regular, so that the necessity o machining them or rejecting a large percentage of the castings will be effectively overcome. The formation of the groove 13 contributes to this result and also'prevents uneven shrinkage of the bearing-face 12 and the bearing-surface 10 for the ring, re-

sultantly, there will be a substantially perfect fit between the ring and bearing faces in the parts, as they are cast.

In some instances, a fillet has been cast at the outer edge of the bearing of the ring, but this causes extreme draw and shrinkage at the bearing face and the bearing edge. Resultantly, the formation of the bearing face in a *aised portion or wall and the formation of the groove 13 at the corner between the bearing faces 12 and 10, greater regularity in the castings is attained. 1rregularity of form in the ring is also desired to overcome uneven shrinkage, so the ring is formed with a wide portion or rim 18 at its periphery, with a channel 19 which reduces the thickness inwardly of the periphery and a groove 20 is formed in the opposite face of the ring adjacent the teeth, so that the.

metal will be of substantially even thickness throughout except at its periphery. In this manner, shrinkage and war-page, are in great measure, avoided and the rings, as cast, will have substantially true wearing faces. The channel 19 has an additional function, in that it serves to draw the seed down into the feed cup by producing an enlargement of the throat at the portion adjacent the groove.

Holes 1% in raised wall 15 are formed to permit the dirt between the ring and the wall 15 to escape and thus prevent any wabble in the ring which sometimes results from dirt or particles of seed or sand Working in between the ring and its bearing faces.

The transverse walls a and a of the case fit against the outer edge of the ring and confine it in its recess in section a A rib a is formed on section a to underlie crosswall a as shown.

The invention is not to be restricted to the details set forth, since these may be modified within the scope of the appended claims, without departing from the spirit and scope of the invention.

Having thus described the invention what I claim as new and desire to secure by Letters Patent, is:

1. The combination of a case formed of sections, one section having a recess therein and a wall projecting from the outer side thereof, a feed-wheel in the case, a shaft for driving the feed-wheel and a feed-ring mounted in said recess and bearing against the inner face of the projecting wall, a groovebeing formed at the outer edge of 'cry of the recess, at the outer edge of said recess and in said sections, one

said recess, and in said inner face of said wall.

2. The combination of a case formed of sections, one section having a recess therein and a wall projecting from the other side thereof, a feed-wheel in the case, a shaft for driving the feed-wheel and a feed-ring mounted in said recess and bearing against the inner face of the projecting wall, and having its periphery bearing in the peripha groove being formed inner face of said wall.

3. The combination of a case formed of sections, one section having a recess and a wall projecting from one side thereof, a feedWheel in the case, a shaft for driving the feed-wheel, and a feed-ring mounted in said recess and bearing against the inner face of the projecting wall, said wall having openings therein adjacent the outer edge of the ring for the escape of any material between said bearing-face and the ring.

4. The combination of a case formed of sections, one section having a recess and a wall projecting outwardly from one side thereof, a feed-wheel in the case, a shaft for driving the feed-wheel and a feed-ring mounted in said recess and bearing against the inner face of said wall, said ring having a channel inwardly of its rim.

5. The combination of a case formed of sections one section having a recess and a wall raised from one side thereof, a feedwheel in the case, a shaft for driving the feed-wheel and a feed-ring mounted in said recess and bearing against the inner face of the raised wall, a groove being formed at the outer edge of said bearing face, said ring having grooves on its opposite faces, relatively offset, and a rim of the width of the recess.

6. The combination of a case formed of section having a recess therein and a wall projecting from the outer side thereof, a groove formed at the outer edge of said recess and in the inner face of said wall, a feed-wheel in the case, a shaft for driving the feed-wheel, and a feed-ring mounted in said recess and bearing against the inner face of the projecting wall, said ring having a channel inwardly of its rim.

C. F. Source, H. W. RonINsoN.

. Copies of thispatent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, I). G. 

